This describes a toolset for development. This used to be our recommended toolset until the Atom editor was discontinued by Microsoft (who acquired github – the original developer of Atom). It may still work for some time, although Atom will not be maintained moving forward.
If you already have some of the files or directories matching those obtained from github on your computer, you need to merge the files with the existing ones, replacing any conflicting files as appropriate.
Once this is done, your PIXILAB-Blocks-root/script directory should contain at least the following items
driver system system_lib LICENSE README.md tsconfig.json
The first three items shown above are directories, containing the files obtained from github. They may contain additional files, if you had driver or other scripts installed before.
Once you have those pieces in place, restart your local Blocks server and open the Blocks Editor using your web browser. You should now find the drivers on the Driver menu of a TCP Device added on the Manage page. If you don't see the drivers listed there, they're not installed in the proper location (see above).
Proceed with learning about basic concepts.